masterbatch

English

Etymology

master +‎ batch

Noun

masterbatch (countable and uncountable, plural masterbatches)

1. A solid product (normally of plastic, rubber, or elastomer) in which pigments or additives are optimally dispersed at high concentration in a carrier material. The carrier material is compatible with the main plastic in which it will be blended during molding, whereby the final plastic product obtains the color or properties from the masterbatch.